摘要
利用中空纤维超滤器对灵芝发酵液中聚合物的浓缩进行了较系统的研究,并推导出该超滤器放大的适宜计算公式.结果表明:截留分子量10000d的聚砜不对称膜是适于超滤浓缩灵芝发酵液的超滤膜.适宜的超滤条件为操作压力0.2MPa,料液温度20~30℃,循环速度0.22m/s;在此条件下超滤200min,通量及截留率分别稳定在9.1L/(m2h)和96%左右,发酵液聚合物浓缩5倍以上,其收率达92.6%.
Studies on concentration conditions of Ganoderma fermentation broth by ultrafiltration are made systematically,and useful calculation formula for the ultrafilter was presented for enlarging the ultrafilter. The experimental results indicate that concentration of Ganoderma fermentation broth by hollow fiber membrane is feasible instead of vacuum concentration under optimum conditions(Δ p =0.2 MPa, θ =20 30℃, Vc =0.22 m/s),flux( J )and cut off rate( λ )become stable after 120 min., the recovery of the polymers in Ganoderma fermentation broth is 92.6%,which is concentrated above 5 times at 200 min..
出处
《大连理工大学学报》
CAS
CSCD
北大核心
1999年第3期415-419,共5页
Journal of Dalian University of Technology